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Published in: Rheumatology and Therapy 4/2023

Open Access 12-05-2023 | Rheumatoid Arthritis | Original Research

Association of Hydroxychloroquine Use with a Dose-Dependent Decrease in Mortality Risk in Patients with Elderly-Onset Rheumatoid Arthritis

Authors: Ching-Tsai Lin, Wen-Nan Huang, Jun-Peng Chen, Wei-Ting Hung, Tsu-Yi Hsieh, Hsin-Hua Chen, Kuo-Tung Tang, Der-Yuan Chen, Yi-Hsing Chen, Yi-Ming Chen

Published in: Rheumatology and Therapy | Issue 4/2023

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Abstract

Introduction

Elderly-onset rheumatoid arthritis (EORA) is associated with an increased mortality risk; however, the effect of conventional synthetic, biologics or targeted synthetic disease-modifying anti-rheumatic drugs (csDMARDs, bDMARDs or tsDMARDs) on the EORA-specific mortality risk is unknown. In this study, we investigated the risk factors for all-cause mortality of patients with EORA.

Methods

Data of EORA patients diagnosed with RA at age > 60 years between January 2007 and June 2021 were extracted from the electronic health record of Taichung Veterans General Hospital, Taiwan. Multivariable Cox regression was used to calculate the hazard ratio (HR) and 95% confidence interval (CI). The survival of patients with EORA was analyzed by Kaplan-Meier method.

Results

Among the 980 EORA patients who were enrolled (survivors 852 and non-survivor 128), the significant mortality-associated risk factors [HR (95% CI)] included higher age (1.10 [1.07–1.12], p < 0.001), male sex (1.92 [1.22–3.00], p = 0.004), current smoker (2.31 [1.10–4.87], p = 0.027) and underlying malignancy (1.89 [1.20–2.97], p = 0.006). Hydroxychloroquine treatment conferred protection against mortality in patients with EORA (HR 0.30, 95% CI 0.14–0.64, p = 0.002). Patients with malignancy who did not receive hydroxychloroquine treatment had the highest mortality risk compared with their counterparts. Patients with a monthly cumulative dose of hydroxychloroquine dose < 1374.5 mg had the lowest survival rate compared to patients who received hydroxychloroquine 1374.5–5778.5 and ≥ 5778.5 mg.

Conclusion

Hydroxychloroquine treatment is associated with survival benefits in patients with EORA, and prospective studies are needed to validate the abovementioned findings.
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Metadata
Title
Association of Hydroxychloroquine Use with a Dose-Dependent Decrease in Mortality Risk in Patients with Elderly-Onset Rheumatoid Arthritis
Authors
Ching-Tsai Lin
Wen-Nan Huang
Jun-Peng Chen
Wei-Ting Hung
Tsu-Yi Hsieh
Hsin-Hua Chen
Kuo-Tung Tang
Der-Yuan Chen
Yi-Hsing Chen
Yi-Ming Chen
Publication date
12-05-2023
Publisher
Springer Healthcare
Published in
Rheumatology and Therapy / Issue 4/2023
Print ISSN: 2198-6576
Electronic ISSN: 2198-6584
DOI
https://doi.org/10.1007/s40744-023-00561-1

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